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Math Help - sine is the orthogonal projection of the unit circle?

  1. #1
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    sine is the orthogonal projection of the unit circle?

    I read that "sine is the orthogonal projection of the unit circle". I know othogonal is another way of saying perpendicular but I still can't quite grasp what is going on here. Can anyone help?

    Thanks!

    -Andy-
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  2. #2
    Junior Member
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    I guess that's a fancy way of saying that sine goes on the y axis and cos on the x axis. Sin 90 =1 etc.
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